two atoms until a perfect collision occurs. However‚ this type of reaction can release a large amount of energy that can be used in nuclear plants to generate electricity for a whole town. Another use of fusion is as a nuclear weapon to create the hydrogen bomb‚ which uses a fission reaction to "trigger" a fusion reaction.When atoms collide‚ the mass released as particles of neutrons can be used to produce nuclear energy. The law of conservation of mass establish that mass cannot be either created
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(#81)‚ 0.0544 g of carbon‚ 0.00685 g of hydrogen and 0.0725 g of oxygen by finding its empirical formula. (TlC2H3O2) 4. What is the empirical formula for a compound which contains 67.1% zinc and the rest is oxygen? (ZnO2) 5. Barry Um has a sample of a compound which weighs 200 grams and contains only carbon‚ hydrogen‚ oxygen and nitrogen. By analysis‚ he finds that it contains 97.56 grams of carbon‚ 4.878 g of hydrogen‚ 52.03 grams of oxygen and 45.53 grams
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163 CHAPTER 13 HYDROCARBON Hydrocarbons are composed of Carbon and hydrogen. The important fuels like Petrol‚ kerosene‚ coal gas‚ CNG‚ LPG etc. are all hydrocarbons or their mixture. Sources: Petroleum and natural gas are the major sources of aliphatic hydrocarbon while coal is an important source of aromatic hydrocarbons. The oil trapped inside the rocks is known as petroleum. PETRA – ROCK‚ OLEUM – OIL. The oil in the petroleum field is covered with a gaseous mixture known as natural
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types of reactions: 1. addition of oxygen 2. removal of hydrogen 3. increase in valency (how easily an atom can combine with other chemical species) Reduction → the gain of electrons → always happens at cathode (negative electrode) → think catHode (H2 produced in the electrolysis of water xp) An oxidising agent is a substance that allows oxidation (the loss of electrons) to occur by being reduced (by taking in those electrons) e.g. hydrogen peroxide (hair bleaching)‚ oxygen (respiration) Real Life
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General Chemistry Laboratory 151 Chemiluminescence Introduction: The objective of tis experiment was to carry out systematic series of experiments in order to determine which chemicals and which ratios of chemicals produce the brightest light. Also‚ this experiment will determine which chemical produces the longest light. Chemiluminescence is the emission of light (luminescence)‚ as the result of a chemical reaction. There may also be limited emission of heat. This occurs because the
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• What were the differences between the balloons developed by the Montgolfiers and those developed by J.A.C Charles? • The Montgolfiers used a balloon that was filled with hot air and the balloons developed by J.A.C Charles were filled with hydrogen even though both had the same purpose. • How are balloons‚ dirigibles‚ and airships similar? How are they different? • The balloons‚ dirigibles‚ and airships are similar because they are considered lighter-than-air crafts‚ and they are lifted
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This molecular compound forms hydrogen bonds with particular molecules and separate ionic lattice. Because it is a polar compound‚ it can be a good solvent. Because of the fact that water is a polar molecule with an electrical dipole moment‚ it can form four hydrogen bonds‚ leading to strong attractive forces between molecules of water‚ giving H2O a high surface tension. INCLUDEPICTURE http//chemlabs
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IGCSE Complete Chemistry Notes Unit 1: States of matter Everything is made of particles. Particles in solid are not free to move around. Liquids and gases can. As particles move they collide with each other and bounce off in all directions. This is called random motion. In 2 substances‚ when mixed‚ particles bounce off in all directions when they collide. This mixing process is called diffusion. It’s also the movement of particles without a force. The smallest particle
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of a black oxide of copper‚ 6. 49g of a black oxide‚ on [3] reduction with hydrogen‚ gave 5.192g of copper. Show that these figures are in accordance with law of constant proportion? 12. A compound was found to have the following percentage composition by mass Zn = 22.65%‚ S = 11.15%‚ H = 4.88%‚ O = 61.32%. The relative molecular mass is 287g/mol. Find the molecular formula of the compound‚ assuming that all the hydrogen in the compound is present in water of crystallizations. Material downloaded
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an isomer‚ differs from (1^H) in that: 3^H has 2 more neutrons than 1^H Nitrogen has 7 electrons and thus can form a maximum of ___ covalent bonds with other elements 3 Carbon has 6 electrons while hydrogen has 1 electron. How many covalent bonds can form between a carbon atom and hydrogen atoms 4 In the lab you are culturing human cells in order for the cells to survive they must be cultured in a solution containing 25 mM glucose. You must make 500 ml of this solution. First‚ calculate
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